Originally Posted by mawahh
Same problem here. I've got hangs almost daily after log in and starting firefox. Very annoying! Mouse moves still and I can change the terminal and kill X to start again. The "usual suspects" like NvAGP off etc did not dispose the problem.
I got rid of a freezing problem completely yesterday, perhaps you could try the solution that worked for me, i.e. undercloking the card. It is described here: http://www.nvnews.net/vbulletin/showthread.php?t=74218
Best of luck.